getString('detector') == 'SIFT': max_features = detector_node.getInt('sift_max_features') #detector = cv2.xfeatures2d.SIFT_create(nfeatures=max_features) detector = cv2.xfeatures2d.SIFT_create() elif detector_node.getString('detector') == 'SURF': threshold = detector_node.getFloat('...
要提高ORB(Oriented FAST and Rotated BRIEF)特征检测的精确度,可以通过调整cv2.ORB_create()函数中的关键参数来实现。以下是一些建议,可以帮助你提高ORB特征检测的精确度: 增加特征点数量(nfeatures): 参数nfeatures指定了要检测的最大特征点数量。增加这个值可以让算法检测更多的特征点,从而可能提高匹配的准确性。
1、ORB_create函数(初始化orb检测器) cv2.ORB_create(nfeatures = 500, scaleFactor = 1.2, nlevels = 8, edgeThreshold = 31, firstLevel = 0, WTA_K = 2, scoreType = HARRIS_SCORE, patchSize = 31, fastThreshold = 20) 1. 2. 3. 4. 5. 6. 7. 8. 9. 参数: nfeatures:特征点最大数...
self.filter_features =Trueiffilter_featuresisNoneelseFalseself._feature_type = feature_typeor'sift'ifcv2.__version__.split('.')[0] =='3':fromcv2.xfeatures2dimportSIFT_create, SURF_createfromcv2importORB_createifself.feature_type =='orb':# https://github.com/opencv/opencv/issues/6081cv2...
cv2.ORB_create(nfeatures = 500, scaleFactor = 1.2, nlevels = 8, edgeThreshold = 31, firstLevel = 0, WTA_K = 2, scoreType = HARRIS_SCORE, patchSize = 31, fastThreshold = 20) 参数解释: nfeatures-int 确定要查找的功能(关键点)的最大数量。
cv2.ORB_create().detectAndCompute(img1,None)——返回的是数据结构为KeyPoint的数据,和矩阵descriptors。 KeyPoint包含6个子项,pt, angle, response, size, octave, class_id: pt:特征点的坐标,是两个浮点型数据。 angle:关键点方向,浮点型。 response:响应强度,匹配得好不好。
We will share code in both C++ and Python. We will demonstrate the steps by way of an example in which we will ... Tags: BRISK cv2.cvtColor cv2.DescriptorMatcher_create cv2.drawMatches cv2.findHomography cv2.ORB_create cv2.warpPerspective descriptor image alignment image registration keypoint ...
min_val, max_val, min_loc, max_loc = cv2.minMaxLoc(result) 参数说明: 1.img: 2.template:模板 3.method:实现模板匹配的算法。主要有: a.平方差匹配(CV_TM_SQDIFF):利用模板与图像之间的平方差进行匹配,最好的匹配是0。 匹配越差,匹配的值越大。
cv2.error: OpenCV(4.5.3-dev) /home/<redacted>/opencv_contrib/modules/cudafeatures2d/src/orb.cpp:535: error: (-215:Assertion failed) u_max.size() < 32 in function 'ORB_Impl' However, no such error occurs for the CPU version, for values of this parameter at least up to 255. ...
cv2.drawKeypoints(image,keypoints,outputimage,color,flags) (4)参考代码 importnumpyasnpimportcv2frommatplotlibimportpyplotasplt# 1、图像读取img=cv2.imread('./image/tv.jpg')# 2、ORB角点检测# 2.1、实例化ORB对象orb=cv2.ORB_create(nfeatures=500)# 2.2、检测关键点,并计算特征描述符kp,des=orb.dete...